1/4+1/8+1/16+1/32+1/64+1/128= 用转化方法做.
问题描述:
1/4+1/8+1/16+1/32+1/64+1/128= 用转化方法做.
答
=1/2*(1/2+1/4+1/8+1/16+1/32+1/64)=1/2*63/64=63/128
1/4+1/8+1/16+1/32+1/64+1/128= 用转化方法做.
=1/2*(1/2+1/4+1/8+1/16+1/32+1/64)=1/2*63/64=63/128